ENS 47706

v t e ENS Event
06:00 Feb 24, 2012
Title	Part 21 Report - Potential Minimum Wall Violation on Seismic Plate Valve Bodies
Event Description	While reviewing Valve Body drawing 16B2201, it was discovered that an area in the packing bore has the possibility to not meet the minimum wall requirements of ASME B16.34 for a Class 150 valve at the minimum material condition due to a potential stack up of tolerances. Upon discovery of this possible failure to comply, an investigation was performed on all NPS 3-12 Type A11 Class 150 Seismic Plate Valve Bodies and it was determined that this issue was isolated to the NPS 8 Type A11 Class 150 Seismic Plate Valve Body per drawing 16B2201. It is the opinion of Fisher that there is no inherent safety risk associated with this situation. Fisher will be working with the individual plants [Clinton Power Station and Watts Bar] in question to measure the actual dimensions of the bodies to determine if a problem exists and will take appropriate corrective action. Fisher Information Notice: FIN 2012-01

ENS 47706 +/-
Where
Fisher Controls International Marshalltown, Iowa (NRC Region 3)
Organization:	Fisher Controls International
Reporting

10 CFR 21.21
Time - Person (Reporting Time:+105.35 h4.39 days <br />0.627 weeks <br />0.144 months <br />)
Opened:	Bill Fitzgerald 15:21 Feb 28, 2012
NRC Officer:	Charles Teal
Last Updated:	Feb 28, 2012
47706 - NRC Website
v • d • e

v t e Emergency Notification System
Fisher Controls International with 10 CFR 21.21, Notification of failure to comply or existence of a defect and its evaluation
WEEKMONTHYEAR2012-02-24T06:00:00 [Table view]
[ENS list for Fisher Controls International]

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